I have a java app packaged as a war which uses the gdata api. It works fine on several machines except one, where all gdata calls fail. It throws AuthenticationException for each gdata request. I've taken care to ensure all the oauth credentials are set correctly and have deployed the exact war on other systems using the exact same process. It fails only on that one environment and I get a 401 Unknown authorization.
The app itself works fine and all servlet requests execute properly. It is only the gdata requests that are failing.
I've tested with curl successfully on that system and am at my wit's end why the library requests are failing.
Could you think of possible reasons for this strange behaviour?